Osculometer
密切曲率计
🗣️ 情景例句
I'd like to have you meet my foreman--
我希望带你去认识工头，
We're having a little get-together Friday night.
周五晚上我们有个小派对。
but the paper was wrapped round a drum which rotated slowly.
根但是纸是卷在慢慢旋转的圆筒上的。